| Event: | Men's 100 metre backstroke |
| Competition: | 2010 Pan Pacific Swimming Championships |
| Venue: | William Woollett Jr. Aquatics Center |
| Dates: | August 18, 2010 (heats &<br>finals) |
| Competitors: | 27 |
| Nations: | 10 |
| Win Value: | 53.31 |
| Gold: | Aaron Peirsol |
| Goldnoc: | USA |
| Silver: | Junya Koga |
| Silvernoc: | JPN |
| Bronze: | Ashley Delaney |
| Bronzenoc: | AUS |
| Prev: | 2006 |
| Next: | 2014 |
The men's 100 metre backstroke competition at the 2010 Pan Pacific Swimming Championships took place on August 18 at the William Woollett Jr. Aquatics Center.[1] [2] [3] The last champion was Aaron Peirsol of US.[4] [5]
This race consisted of two lengths of the pool, all in backstroke.[6]
Prior to this competition, the existing world and Pan Pacific records were as follows:
| World record | 51.94 | Indianapolis, United States | July 8, 2009 | ||
| Pan Pacific Championships record | 53.32 | Victoria, Canada | August 17, 2006 |
All times are in minutes and seconds.
The first round was held on August 18, at 10:59.
| Rank | Heat | Lane | Name | Nationality | Time | Notes | |
|---|---|---|---|---|---|---|---|
| 1 | 4 | 5 | 53.33 | QA | |||
| 2 | 4 | 7 | 53.69 | QA | |||
| 3 | 4 | 4 | Ashley Delaney | 53.78 | QA | ||
| 4 | 4 | 3 | Aaron Peirsol | 53.85 | QA | ||
| 5 | 3 | 3 | 53.96 | QA | |||
| 6 | 3 | 5 | Hayden Stoeckel | 54.05 | QA | ||
| 7 | 2 | 5 | Ryosuke Irie | 54.18 | QA | ||
| 8 | 2 | 4 | Junya Koga | 54.39 | QA | ||
| 9 | 3 | 4 | Guilherme Guido | 54.79 | QB | ||
| 9 | 3 | 2 | Masafumi Yamaguchi | 54.79 | QB | ||
| 11 | 2 | 4 | Daniel Arnamnart | 54.81 | QB | ||
| 12 | 2 | 1 | Gareth Kean | 55.00 | QB | ||
| 13 | 2 | 7 | Ben Treffers | 55.02 | QB | ||
| 14 | 2 | 3 | George Du Rand | 55.08 | QB | ||
| 15 | 4 | 2 | Gabriel Mangabeira | 55.15 | QB | ||
| 16 | 4 | 1 | Jake Tapp | 55.31 | QB | ||
| 17 | 3 | 6 | Daniel Bell | 55.32 | |||
| 18 | 3 | 1 | Tobias Oriwol | 55.37 | |||
| 19 | 4 | 8 | Kuninori Tada | 55.60 | |||
| 20 | 3 | 8 | Matt Hawes | 55.65 | |||
| 21 | 3 | 7 | Charles Francis | 55.73 | |||
| 22 | 2 | 2 | Park Seon-Kwan | 56.01 | |||
| 23 | 2 | 8 | Matthew Swanston | 56.34 | |||
| 24 | 4 | 6 | Federico Grabich | 56.38 | |||
| 25 | 1 | 5 | Andrew Ford | 57.05 | |||
| 26 | 1 | 4 | Nicholas Sinclair | 57.58 | |||
| 27 | 1 | 3 | Chung Lai-Yeung | 59.95 |
The B final was held on August 18, at 19:18.
| Rank | Lane | Name | Nationality | Time | Notes | |
|---|---|---|---|---|---|---|
| 9 | 4 | Nick Thoman | 53.66 | |||
| 10 | 5 | Masafumi Yamaguchi | 54.98 | |||
| 11 | 8 | Tobias Oriwol | 55.34 | |||
| 12 | 6 | George Du Rand | 55.36 | |||
| 13 | 1 | Daniel Bell | 55.37 | |||
| 14 | 7 | Jake Tapp | 55.47 | |||
| 15 | 2 | Gabriel Mangabeira | 56.01 | |||
| 16 | 3 | Daniel Arnamnart | 56.08 |
The A final was held on August 18, at 19:18.
| Rank | Lane | Name | Nationality | Time | Notes | |
|---|---|---|---|---|---|---|
| 3 | 53.31 | CR | ||||
| 7 | 53.63 | |||||
| 5 | 53.67 | |||||
| 4 | 2 | Ryosuke Irie | 53.71 | |||
| 5 | 4 | David Plummer | 53.80 | |||
| 6 | 6 | Hayden Stoeckel | 54.06 | |||
| 7 | 8 | Gareth Kean | 54.57 | |||
| 8 | 1 | Guilherme Guido | 55.05 |